Bottom Line: KAMI 2 is one of the purest logic puzzles you can put on a phone. It's a calm, beautiful color-flood game whose move counter turns every board into a quiet argument with yourself. Play the free mobile version; the paid PC and Switch release adds convenience, not a reason to pay.
The Core Loop: A Graph Problem in Paper Clothing
Take away the paper and KAMI 2 is a graph puzzle. Every connected patch of color is a node, and every border it shares with another patch is an edge. Each move collapses one node into its neighbors. The optimal solution usually means finding the region closest to the center of that network, the patch from which every other color is the fewest steps away, and flooding outward from it. The general version of this problem is computationally hard, which is exactly why it makes a good puzzle. There's no formula to apply, only pattern recognition and insight.
The triangle grid is the sequel's smartest structural decision. Square grids produce blocky, readable shapes. Triangles produce sawtooth borders, needle-thin bridges, and patches that appear to touch but don't share an edge. A board that looks like three colors cleanly divided often turns out to be a dozen separate regions linked by slivers. Reading the board, not executing moves, is the real skill, and KAMI 2 tests it constantly.
The best moments come from the reversal: realizing that the obvious opening, the biggest and loudest region, is a trap, and that the right first move is a tiny patch in the middle that ties everything together. KAMI 2 delivers that "aha" again and again, and it rarely feels cheap. When you miss par, it's almost always because you misread the structure, not because the game hid information from you. That is the difference between a fair puzzle and a frustrating one, and State of Play understands it.
Difficulty Curve and the Hint Economy
The 100-plus campaign puzzles ramp up steadily, adding denser layouts and more colors as you go. The early curve is close to ideal. Boards introduce an idea, let you practice it, then turn it against you.
The later puzzles get hard, and that is the most common complaint. On its own, that's fine. A logic game should eventually demand everything you have. The problem is where the business model sits. On mobile, hints are sold as in-app purchases. When a free-to-play game's difficulty peaks right where it sells the answers, players are right to be suspicious. I don't think State of Play is cynically building paywalls. The late boards feel hard because they're dense and intricate, not because they're unfair. But the structure still causes friction. The store is always one tap away, and that weakens the most valuable thing the game offers: the satisfaction of cracking a board yourself.
The Daily Challenge and the Endless Tail
The Daily Challenge keeps players coming back, and it's well judged. One board, a streak to protect, and a global comparison of move counts. It fits a coffee break, and it's competitive without being stressful, because you're measured against an efficiency target rather than a clock. That fits the game's calm identity much better than a timed leaderboard would.
The Puzzle Builder turns KAMI 2 from a finite campaign into a platform. Designing a board is its own puzzle, because you have to know the optimal solution to set a meaningful par, and challenging a friend to beat your move count is a smart social hook. With thousands of new puzzles uploaded daily, you will never run out of content. The trade-off is structural. At that volume, curation is everything: the campaign's careful teaching order disappears, and what replaces it is a firehose rather than a curriculum. For veterans that's ideal. Newcomers should finish the hand-made puzzles first.
Interface and Onboarding
The interface is close to invisible: a palette, a board, a move counter. Onboarding friction is nearly zero, because the first boards explain the rules simply by being solvable. That minimalism serves the design well. Nothing sits between you and the problem, and the move counter is the only thing on screen that applies pressure. Restraint is a design choice here, not a budget limitation.
